So to me, the monk is not an archetype, it's a high level version of an archetype we already have--the warrior.
And to me, monks are not just warriors. They are closer to Rogues.
The math is
Rogue base - Sneak Attack - Underworld Knowledge (traps, locks, and cunning) + Fighter level combat ( only when unarmed or using simple weapons and when unarmored) + Cleric level Wisdom, Insight, Speech, and Healing (Self only)
They are closer to rogues to me. Monks are heavily reliant on Dexterity for defense. They backflip, tumble, and jump all over the place. Many are decent talkers. Most are good at perception. And to beat an equal level warrior, they must throw everything at them.
The main thing is you trade out Underworld Tactics and Lore for Spiritual and Physical Perfection.